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Shaped Corrugated Horns for Cosmic Microwave Background Anisotropy Measurements

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Abstract

Novel corrugated horn have been modelled, manufactured and measured which give low-sidelobe patterns required by CMB Anisotropy experiments. These horns have a Back-to-Back structure with mode filtering at their centres. They are corrugated to give axial symmetric low-sidelobe patterns, profiled to reduce their length, and have a Gaussian flare at their entrance apertures to further suppress sidelobes to -40dB. Modelling and experimental results show excellent agreement to well below 50 dB.

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Maffei, B., Ade, P.A.R., Tucker, C.E. et al. Shaped Corrugated Horns for Cosmic Microwave Background Anisotropy Measurements. International Journal of Infrared and Millimeter Waves 21, 2023–2033 (2000). https://doi.org/10.1023/A:1006784404316

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  • DOI: https://doi.org/10.1023/A:1006784404316

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